gp:[N,k,chi] = [10230,2,Mod(1,10230)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
magma://Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("10230.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(10230, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0, 0]))
N = Newforms(chi, 2, names="a")
Newform invariants
sage:traces = [1,1,-1,1,-1,-1,0,1,1,-1,1,-1,4,0,1,1,8,1,6,-1,0,1,-4,-1,1,4,
-1,0,-2,1,1,1,-1,8,0,1,-6,6,-4,-1,4,0,-2,1,-1,-4,10,-1,-7,1,-8,4,6,-1,
-1,0,-6,-2,12,1,10,1,0,1,-4,-1,2,8,4,0,-8,1,-10,-6,-1,6,0,-4,-16,-1,1,
4,12,0,-8,-2,2,1,-8,-1,0,-4,-1,10,-6,-1,2,-7,1,1]
f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(None)] == traces)
gp:f = lf[1] \\ Warning: the index may be different
sage:f.q_expansion() # note that sage often uses an isomorphic number field
gp:mfcoefs(f, 20)
| \( p \) |
Sign
|
| \(2\) |
\( -1 \) |
| \(3\) |
\( +1 \) |
| \(5\) |
\( +1 \) |
| \(11\) |
\( -1 \) |
| \(31\) |
\( -1 \) |
This newform does not admit any (nontrivial) inner twists.
Twists of this newform have not been computed.